为了演示和验证稳定器设计的就地相位补偿法在多机电力系统中的应用,介绍在多机电力系统中,就地补偿设计稳定器的2个应用实例。第1个实例是在多机电力系统中就地补偿设计电力系统稳定器（power system stabilizer,PSS）,阻尼电力系统局...为了演示和验证稳定器设计的就地相位补偿法在多机电力系统中的应用,介绍在多机电力系统中,就地补偿设计稳定器的2个应用实例。第1个实例是在多机电力系统中就地补偿设计电力系统稳定器（power system stabilizer,PSS）,阻尼电力系统局部模振荡。第2个实例是就地补偿设计附加在静态同步补偿器（static synchronous compensator,STATCOM）上的稳定器,抑制多机电力系统中的区域模振荡,并给出在一个16机电力系统中的应用计算和仿真结果。展开更多
The mode-based damping torque analysis(M-DTA)method for studying the effect of an external controller on power system low-frequency oscillations is proposed in this paper.First,based on the interconnection model betwe...The mode-based damping torque analysis(M-DTA)method for studying the effect of an external controller on power system low-frequency oscillations is proposed in this paper.First,based on the interconnection model between the system and the controller in the frequency domain,the oscillation loop corresponding to the electromechanical oscillation mode is built,and then the mode-based damping torque of the controller can be calculated.Then,the application of the M-DTA method in the power system is illustrated.The derivation shows that in the single-machine infinite-bus power system,the M-DTA method is completely equivalent to the classical damping torque analysis(C-DTA)method.In the multi-machine power system,the mode-based damping torque directily reflects the effect of the controller on the oscillation mode,overcoming the shortcomings of the C-DTA method in which there is no direct correspondence between the damping torque and the oscillation mode.By deriving the relationship with the residue index,the M-DTA method shows higher accuracy than the residue method in applications,such as controller parameter adjustment.Finally,two example power systems are presented to demonstrate the application of the proposed M-DTA method.Index Terms-Electromechanical oscillation mode,FACTS,interconnection model in the frequency domain,mode-based damping torque analysis(M-DTA),power system low-frequency oscillation,PSS,residue method.展开更多
为消除飞轮储能系统(flywheel energy storage system,FESS)稳定器与电力系统稳定器(power system stabilizer,PSS)间可能存在的相互负影响,提出将加入混沌算法和模拟退火思想的改进粒子群优化算法(improved particle swarmoptimization...为消除飞轮储能系统(flywheel energy storage system,FESS)稳定器与电力系统稳定器(power system stabilizer,PSS)间可能存在的相互负影响,提出将加入混沌算法和模拟退火思想的改进粒子群优化算法(improved particle swarmoptimization,IPSO)用于协调优化FESS稳定器与PSS参数。该算法通过混沌初始化和迭代中加入模拟退火思想来提高算法的效率和全局搜索能力。将多种运行方式下的所有特征值作为考察对象,在目标函数中同时考虑机电振荡模式和非机电振荡模式的性能,并通过IPSO算法协调优化各稳定器参数。在新英格兰10机系统算例中,应用IPSO算法协调优化的稳定器在不同运行方式下都能有效抑制系统振荡,表明了该方法的有效性和鲁棒性。在4机系统算例中,通过与逐个设计稳定器方法的比较可知,经IPSO协调优化的稳定器具有更好的阻尼效果,从而验证了该方法的优越性。展开更多
文摘为了演示和验证稳定器设计的就地相位补偿法在多机电力系统中的应用,介绍在多机电力系统中,就地补偿设计稳定器的2个应用实例。第1个实例是在多机电力系统中就地补偿设计电力系统稳定器（power system stabilizer,PSS）,阻尼电力系统局部模振荡。第2个实例是就地补偿设计附加在静态同步补偿器（static synchronous compensator,STATCOM）上的稳定器,抑制多机电力系统中的区域模振荡,并给出在一个16机电力系统中的应用计算和仿真结果。
基金supported in part by the National Natural Science Foundation of China under Grant No.U1766202,51907179 and 51977197.
文摘The mode-based damping torque analysis(M-DTA)method for studying the effect of an external controller on power system low-frequency oscillations is proposed in this paper.First,based on the interconnection model between the system and the controller in the frequency domain,the oscillation loop corresponding to the electromechanical oscillation mode is built,and then the mode-based damping torque of the controller can be calculated.Then,the application of the M-DTA method in the power system is illustrated.The derivation shows that in the single-machine infinite-bus power system,the M-DTA method is completely equivalent to the classical damping torque analysis(C-DTA)method.In the multi-machine power system,the mode-based damping torque directily reflects the effect of the controller on the oscillation mode,overcoming the shortcomings of the C-DTA method in which there is no direct correspondence between the damping torque and the oscillation mode.By deriving the relationship with the residue index,the M-DTA method shows higher accuracy than the residue method in applications,such as controller parameter adjustment.Finally,two example power systems are presented to demonstrate the application of the proposed M-DTA method.Index Terms-Electromechanical oscillation mode,FACTS,interconnection model in the frequency domain,mode-based damping torque analysis(M-DTA),power system low-frequency oscillation,PSS,residue method.
文摘为消除飞轮储能系统(flywheel energy storage system,FESS)稳定器与电力系统稳定器(power system stabilizer,PSS)间可能存在的相互负影响,提出将加入混沌算法和模拟退火思想的改进粒子群优化算法(improved particle swarmoptimization,IPSO)用于协调优化FESS稳定器与PSS参数。该算法通过混沌初始化和迭代中加入模拟退火思想来提高算法的效率和全局搜索能力。将多种运行方式下的所有特征值作为考察对象,在目标函数中同时考虑机电振荡模式和非机电振荡模式的性能,并通过IPSO算法协调优化各稳定器参数。在新英格兰10机系统算例中,应用IPSO算法协调优化的稳定器在不同运行方式下都能有效抑制系统振荡,表明了该方法的有效性和鲁棒性。在4机系统算例中,通过与逐个设计稳定器方法的比较可知,经IPSO协调优化的稳定器具有更好的阻尼效果,从而验证了该方法的优越性。
